CN104022610A - Self-excited hybrid excitation high-efficiency permanent magnet synchronous generator - Google Patents
Self-excited hybrid excitation high-efficiency permanent magnet synchronous generator Download PDFInfo
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- CN104022610A CN104022610A CN201410216855.8A CN201410216855A CN104022610A CN 104022610 A CN104022610 A CN 104022610A CN 201410216855 A CN201410216855 A CN 201410216855A CN 104022610 A CN104022610 A CN 104022610A
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Abstract
The invention relates to a self-excited hybrid excitation high-efficiency permanent magnet synchronous generator which comprises a permanent magnet synchronous generator, a self-excited excitation capacitor and a controller. A rotor of the generator is provided with a permanent magnet pole, and an armature winding is inlaid in a stator. During no-load of the generator, an air-gap field of the generator is provided by a permanent magnet alone. During load of the generator, output load current value is detected by the controller at real time, and real-time logic programming is carried out to calculate the range of a preset split current value corresponding to the real-time value of the output load current. The controller generates a corresponding electronic switching tube triggering signal to trigger a corresponding electronic switching tube, and execution of automatic switching of corresponding self-excited excitation capacitance is realized. Thus, self-excited excitation current is automatically adjusted to compensate armature reaction of load current of the generator, and the defect that a permanent magnet generator cannot adjust an air-gap filed is solved. The generator provided by the invention has characteristics as follows: steady-state regulation rate of voltage is minimized, power factor is raised, and the generator is efficient and energy-saving.
Description
Technical field
The present invention relates to permanent magnet generator technical field, particularly a kind of self-excitation compound rectifier excitation efficient permanent magnet synchronous generator.
Background technology
Permanent magnet generator air-gap field is provided by permanent magnet, compared with traditional electrical excitation generator, has saved electric excitation system and excitation loss, has simple in structure, reliable, efficiency high.Fig. 1 is known efficient permanent magnet synchronous generator structural representation, the air-gap field of the synchronous generator of efficient permanent magnet shown in figure is provided by rotor side's permanent magnet, but, permanent magnet generator load current produces armature reaction and causes that the working point of permanent magnet produces dynamic change, particularly permanent magnet generator band inductive load produces the demagnetizing effect of even more serious d-axis armature reaction, the armature reaction of permanent magnet generator has not only weakened air-gap field and has made air-gap field produce distortion, because the air-gap field that permanent magnet provides cannot be with load regulation, so the voltage regulation of permanent magnet generator is more much bigger than the voltage regulation of electric excitation generator, affect applying of permanent magnet generator.
Summary of the invention
In order to address the above problem, the object of this invention is to provide a kind of self-excitation compound rectifier excitation efficient permanent magnet synchronous generator, can automatically regulate self-excitation exciting current to compensate the armature reaction of described generator loading electric current, while realizing described generator loading, air-gap field is provided by permanent magnet and self-excitation exciting current compound rectifier excitation, solve the shortcoming that permanent magnet generator cannot regulate air-gap field, described generator has the voltage of reducing stable state regulation, improves power factor and the feature such as energy-efficient.
The present invention adopts following scheme to realize: a kind of self-excitation compound rectifier excitation efficient permanent magnet synchronous generator, comprise: magneto alternator, self-excitation exciting capacity and be provided with the controller that triggers electronic switching tube and carry out automatic switching self-excitation exciting capacity, it is characterized in that: the rotor of described generator is provided with permanent magnetism magnetic pole, stator is around being embedded with armature winding, when described generator is unloaded, power generator air gap magnetic field is provided separately by permanent magnet, when described generator loading, the sizes values that detects in real time described generator output load current by described controller sends into single-chip microcomputer or industrial control computer carries out Real-time Logic calculating, load current signal size conversion after calculating according to Real-time Logic becomes the triggering signal of electronic switching tube, carry out automatic switching self-excitation exciting capacity generation self-excitation exciting current to trigger electronic switching tube, while realizing described generator loading, air-gap field is provided by permanent magnet and self-excitation exciting current compound rectifier excitation, thereby automatically regulate self-excitation exciting current to compensate the armature reaction of described generator loading, reduce the voltage stable state regulation of described generator, improve the power factor of described generator.
When the present invention can realize permanent magnet generator zero load, air-gap field is provided separately by permanent magnet, when load, detected in real time the signal of described permanent magnet generator output load current by controller, the signal that is converted to triggering electronic switching tube by controller removes to trigger electronic switching tube, carry out automatic switching self-excitation exciting capacity, thereby realize the armature reaction that automatically regulates the load of self-excitation exciting current compensation permanent magnet generator, solve the shortcoming that permanent magnet generator cannot regulate air-gap field, there is the voltage of reducing stable state regulation, improve power factor and the feature such as energy-efficient.
Brief description of the drawings
Fig. 1 is the structural representation of known efficient permanent magnet synchronous generator.
Fig. 2 is the structural representation of embodiment of the present invention device.
Fig. 3 is the invention process csr controller working method schematic diagram.
In Fig. 1,1 is rear end cap; 2 is bearing; 3 is armature winding; 4 is lead-out wire; 5 is stator core; 6 is permanent magnet; 7 is air gap; 8 is rotor; 9 is fan; 10 is front end housing; 11 is outer power transmission shaft.
It in Fig. 4 a, is known magneto alternator inductive load phasor schematic diagram; Fig. 4 b is embodiment of the present invention inductive load phasor schematic diagram; F
cfor permanent magnet magnetic potential, I
zfor load current, F
zfor I
zthe armature reaction magnetic potential producing, I
rfor self-excitation exciting current, F
rfor I
rthe magnetic potential of setting up, F
ifor F
zand F
rthe composite magnetic power of setting up, F
δfor the air gap composite magnetic power of load.
Embodiment
The invention provides a kind of self-excitation compound rectifier excitation efficient permanent magnet synchronous generator, comprising: magneto alternator, self-excitation exciting capacity and be provided with the controller that triggers electronic switching tube and carry out automatic switching self-excitation exciting capacity.When described generator is unloaded, power generator air gap magnetic field is provided separately by permanent magnet, when described generator loading, detected in real time the signal of described permanent magnet generator output load current by controller, the signal that is converted to triggering electronic switching tube by controller removes to trigger electronic switching tube, carry out automatic switching self-excitation exciting capacity, thereby realize the armature reaction that automatically regulates the load of self-excitation exciting current compensation permanent magnet generator, solved permanent magnet generator and cannot regulate the shortcoming of air-gap field.
The rotor of described generator is provided with permanent magnetism magnetic pole as shown in Figure 1, stator is around being embedded with armature winding, rotor permanent magnet magnetic pole permanent magnet provides generator non-load air gap field, when described generator is unloaded, executing power outward drags axle 11 and turns, make described generator amature rotating speed reach the no-load speed of corresponding idling frequency, set up stator armature winding terminal floating voltage, due to generator zero load, electric loading electric current equals zero, the input of controller no signal current does not produce triggering signal as shown in Figure 2, and electronic switching tube is in off state.
When described generator loading, load current I as shown in Figure 2
zsize changes with generator loading, load current I
zproduce armature reaction and cause described power generator air gap field weakening, make stator armature winding terminal voltage drop, controller detects load current I in real time as shown in Figure 3
zsizes values carry out Real-time Logic programming through single-chip microcomputer or industrial control computer and calculate, and judge the load current I detecting
zinstantaneous value whether exceed after the corresponding current value range that presets point gear, determine that by fuzzy logic circuit correspondence presets the triggering signal input execution triggering electronic switching tube circuit of point electronic switching tube of gear, remove to trigger corresponding group electronic switching tube by carrying out triggering electronic switching tube circuit, the size that automatically drops into the exciting capacitor of encouraging oneself produces self-excitation exciting current I
rthe armature reaction of compensating load, thus realize the armature reaction that automatically regulates self-excitation exciting current to compensate described generator loading electric current.As shown in Figure 2, the electronic switching tube in described device adopts the combination of totally 8 kinds of different capacitances of switching of three branch circuit parallel connection compositions, known magneto alternator inductive load phasor schematic diagram as shown in Figure 4 a, I from self-excitation electric capacity
zproduce F
zd-axis armature reaction magnetic potential play demagnetizing effect, make the air gap composite magnetic power F of load
δdirect axis component compare F
cmuch little, be embodiment of the present invention inductive load phasor schematic diagram as shown in Figure 4 b, I
zproduce F
zd-axis armature reaction magnetic potential be also demagnetizing effect, but I
rset up F
rd-axis armature reaction play magnetization, compensated I
zthe d-axis armature reaction of demagnetizing effect, the therefore F of load air gap composite magnetic power shown in Fig. 4 b of the embodiment of the present invention
δdirect axis component than the F of load air gap composite magnetic power shown in Fig. 4 a of known magneto alternator
δdirect axis component much bigger, realize the modulability of permanent magnet generator air-gap field.
Only as described above, it is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of generally doing according to the present patent application the scope of the claims and invention description content changes and modifies, and all still remains within the scope of the patent.Arbitrary embodiment of the present invention or claim must not reached the disclosed whole objects of the present invention or advantage or feature in addition.
Claims (3)
1. a self-excitation compound rectifier excitation efficient permanent magnet synchronous generator, comprise: magneto alternator, self-excitation exciting capacity and be provided with the controller that triggers electronic switching tube and carry out automatic switching self-excitation exciting capacity, it is characterized in that: the rotor of described generator is provided with permanent magnetism magnetic pole, stator is around being embedded with armature winding, when described generator is unloaded, power generator air gap magnetic field is provided separately by permanent magnet, when described generator loading, the sizes values that detects in real time described generator output load current by described controller sends into single-chip microcomputer or industrial control computer carries out Real-time Logic calculating, load current signal size conversion after calculating according to Real-time Logic becomes the triggering signal of electronic switching tube, carry out automatic switching self-excitation exciting capacity generation self-excitation exciting current to trigger electronic switching tube, while realizing described generator loading, air-gap field is provided by permanent magnet and self-excitation exciting current compound rectifier excitation, thereby automatically regulate self-excitation exciting current to compensate the armature reaction of described generator loading, reduce the voltage stable state regulation of described generator, improve the power factor of described generator.
2. self-excitation compound rectifier excitation efficient permanent magnet synchronous generator according to claim 1, it is characterized in that: described controller goes the triggering signal that adopts the signal that described generator output load current detected in real time to convert to trigger electronic switching tube to control opening and turn-offing of electronic switching tube, automatically performs switching self-excitation exciting capacity.
3. self-excitation compound rectifier excitation efficient permanent magnet synchronous generator according to claim 1, it is characterized in that: described controller adopts current transformer or multifunctional electric energy computation chip to detect in real time the signal of described generator output load current, by single-chip microcomputer or industrial control computer, the signal of the described generator output load current detecting in real time being carried out to Real-time Logic programming calculates, determine according to the corresponding point scope for gear size of current that presets of the signal value that calculates described generator loading electric current the electronic switching tube that triggering is corresponding, realize corresponding described generator loading size of current and carry out the self-excitation exciting capacitor that switching is corresponding, automatically regulate self-excitation exciting current to compensate the armature reaction of described generator loading electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410216855.8A CN104022610B (en) | 2014-03-18 | 2014-05-22 | Self-excitation compound rectifier excitation efficient permanent magnet synchronous generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014100981197 | 2014-03-18 | ||
| CN201410098119 | 2014-03-18 | ||
| CN201410098119.7 | 2014-03-18 | ||
| CN201410216855.8A CN104022610B (en) | 2014-03-18 | 2014-05-22 | Self-excitation compound rectifier excitation efficient permanent magnet synchronous generator |
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| CN104022610A true CN104022610A (en) | 2014-09-03 |
| CN104022610B CN104022610B (en) | 2016-10-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113179053A (en) * | 2021-06-16 | 2021-07-27 | 国华(青岛)智能装备有限公司 | Synchronous motor control system and control method |
Citations (4)
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|---|---|---|---|---|
| JP2009071918A (en) * | 2007-09-11 | 2009-04-02 | Toyo Electric Mfg Co Ltd | Generating device for distributed power supply |
| CN101610060A (en) * | 2009-07-15 | 2009-12-23 | 南京航空航天大学 | Self-excitation mixed-excitation brushless direct current power-generating system and control method thereof |
| CN101753089A (en) * | 2010-01-13 | 2010-06-23 | 南京航空航天大学 | Wind power generation system for direct-drive dual stator-winding induction generator |
| CN102480201A (en) * | 2010-11-25 | 2012-05-30 | 余虹锦 | Permanent magnet brushless single-phase synchronous generator using novel hybrid excitation way |
-
2014
- 2014-05-22 CN CN201410216855.8A patent/CN104022610B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009071918A (en) * | 2007-09-11 | 2009-04-02 | Toyo Electric Mfg Co Ltd | Generating device for distributed power supply |
| CN101610060A (en) * | 2009-07-15 | 2009-12-23 | 南京航空航天大学 | Self-excitation mixed-excitation brushless direct current power-generating system and control method thereof |
| CN101753089A (en) * | 2010-01-13 | 2010-06-23 | 南京航空航天大学 | Wind power generation system for direct-drive dual stator-winding induction generator |
| CN102480201A (en) * | 2010-11-25 | 2012-05-30 | 余虹锦 | Permanent magnet brushless single-phase synchronous generator using novel hybrid excitation way |
Non-Patent Citations (1)
| Title |
|---|
| 吴亚麟: "稀土永磁同步发电机电辅助复合励磁系统的研究与设计", 《电气技术》, no. 9, 15 September 2008 (2008-09-15), pages 58 - 61 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113179053A (en) * | 2021-06-16 | 2021-07-27 | 国华(青岛)智能装备有限公司 | Synchronous motor control system and control method |
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| CN104022610B (en) | 2016-10-12 |
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